TERMINAL PHLOEM IN VASCULAR BUNDLES OF LEAVES OF CAPSICUM ANNUUM AND PHASEOLUS VULGARIS†
作者:
Berta Lange de Morretes,
期刊:
American Journal of Botany
(WILEY Available online 1962)
卷期:
Volume 49,
issue 6Part1
页码: 560-567
ISSN:0002-9122
年代: 1962
DOI:10.1002/j.1537-2197.1962.tb14981.x
出版商: Wiley
数据来源: WILEY
摘要:
Morretes, Berta Lange de. (U. Sao Paulo, Brazil.)Terminal phloem in vascular bundles of leaves of Capsicum annuum and Phaseolus vulgaris.Amer. Jour. Bot. 49(6): 560–567. Illus. 1962.—The terminations of vascular bundles in the mesophyll ofCapsicum annuumandPhaseolus vulgariswere studied in mature leaves. InCapsicum, both the principal and the lateral vein endings contain phloem and, generally, the xylem and the phloem end together; in some bundles, however, the last xylem element extends slightly beyond the last sieve element. InPhaseolus, main and lateral vein endings may terminate with both xylem and phloem, or xylem only. Some lateral endings contain no sieve elements; in such endings, parenchyma may occupy the position of the phloem. The sieve elements of the vein endings contain slime bodies. In both species the companion cells of terminal phloem are wider than the sieve elements, have dense cytoplasm, and rich granulation.
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